1. HUMAN REPRODUCTION and DEVELOPMENT
Chapo
Biology 1 Honors

2. ANATOMY of the reproductive systems
Using a TEXTBOOK, fill in the diagrams for both male and female reproductive anatomy on your power notes. 

3. KEY – Female Reproductive Anatomy

4. KEY – Male Reproductive Anatomy

5. What is the reproductive system?
A collection of specialized organs, glands and hormones that help produce a new human being. Females and males may sexually reproduce after puberty occurs.
HORMONES USED:
Males = testosterone
Females = estrogen

6. FEMALE SYSTEM FUNCTIONS OF THE FEMALE REPRODUCTIVE SYSTEM:
EGGS are produced (ova)
Provides a place for an embryo to develop
Delivers new human being

7. FEMALE REPRODUCTIVE PART
FUNCTION
OVARIES
Produces EGG CELLS and releases them during menstruation
FALLOPIAN TUBE
Egg cells travel here to be FERTILIZED by sperm
***ZYGOTE –the first cell of a new human being with 46 chromosomes
UTERUS
Also known as the WOMB. Fertilized eggs travel here to stay and develop until birth.

8. PATHWAY OF THE EGG TO THE UTERUS IN FEMALES
2. FALLOPIAN TUBES
(egg is FERTLIZED)
3. UTERUS
(zygote stays here to develop
Into a fetus for 9 months)
1. OVARY
(egg is released)

9. **PATHWAY FROM FERTILIZATION TO BIRTH
OVARY – egg released
FALLOPIAN TUBE – egg fertilized
UTERUS – develops for 3 trimesters
CERVIX – dilates before birth
VAGINA – baby is delivered
HOW CAN YOU REMEMBER THIS ORDER?

10. MALE SYSTEM FUNCTIONS OF THE MALE REPRODUCTIVE SYSTEM: Produce SPERM
Deliver sperm to unfertilized egg

11. MALE REPRODUCTIVE PART
FUNCTION
TESTES
Immature sperm production (immature = cannot be used to fertilize an egg yet)
EPIDIDYMUS
Sperm travels here to become MATURE.
Can be stored here
VAS DEFERENS
Protects the sperm
(think deferens = defense)

13. So, what happens after an egg has been fertilized?
A zygote forms and begins to develop in the uterus.
QUESTION: HOW MANY WEEKS DOES IT TAKE TO FULLY DEVELOP A NEW HUMAN BEFORE BIRTH?

14. What happens during the 3 trimesters of pregnancy?
FIRST TRIMESTER
WEEKS 1-12
Heart beat detected
(5 weeks)
Becomes FETUS (9 weeks)
Organs begin to form (heart, brain, liver, kidney, pancreas)
Limbs, finger and toes develop
Hair, fingernails and toenails develop

15. What happens during the 3 trimesters of pregnancy?
FIRST TRIMESTER
SECOND TRIMESTER
WEEKS 1-12
Heart beat detected
(5 weeks)
Becomes FETUS (9 weeks)
Organs begin to form (heart, brain, liver, kidney, pancreas)
Limbs, finger and toes develop
Hair, fingernails and toenails develop
WEEKS 13-27
Continued development of joints, bones, skin and brain
Eyes blink and lashes form
Movement
Breath amniotic fluid to STRENGTHEN LUNGS
Swallow amniotic fluid = urine

16. What happens during the 3 trimesters of pregnancy?
FIRST TRIMESTER
SECOND TRIMESTER
THIRD TRIMESTER
WEEKS 1-12
Heart beat detected
(5 weeks)
Becomes FETUS (9 weeks)
Organs begin to form (heart, brain, liver, kidney, pancreas)
Limbs, finger and toes develop
Hair, fingernails and toenails develop
WEEKS 13-27
Continued development of joints, bones, skin and brain
Eyes blink and lashes form
Movement
Breath amniotic fluid to STRENGTHEN LUNGS
Swallow amniotic fluid = urine
WEEKS 28-40
Grow larger in size (normal range 7-9 pounds)
STRENGTHEN LUNGS
Respond to light and sound
Born!